#646B17#646B17

#646B17 is a mid, moderate yellow. Relative luminance 0.133; OKLCH L 50.5% C 0.104 H 114.3°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#646B17
RGB	rgb(100, 107, 23)
HSL	hsl(65, 65%, 25%)
HSV	hsv(65, 79%, 42%)
CMYK	cmyk(6.5%, 0%, 78.5%, 58%)
CIE-LAB	lab(43.19, -13.95, 42.93)
CIE-LCH	lch(43.19, 45.14, 108.00°)
OKLab	oklab(50.55% -0.0428 0.0945)
OKLCH	oklch(50.55% 0.104 114.3)
XYZ	xyz(10.6682, 13.2868, 2.8131)
Luminance	0.1329 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646B17 #1E176B

analogous

#6B4817 #646B17 #3A6B17

triadic

#646B17 #17646B #6B1764

tetradic

#646B17 #176B48 #1E176B #6B173A

square

#646B17 #176B48 #1E176B #6B173A

split-complementary

#646B17 #173A6B #48176B

monochromatic

#181905 #35390C #646B17 #939D22 #C2D02D

Accessibility & contrast

On white

5.74

#646B17 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#646B17 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646B17

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646B17	#FFFFFF	#000000	##FFFFFF
##646B17	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#736505

Deuteranopia (green-blind)

#73671E

Tritanopia (blue-blind)

#6B645B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #646b17;
/* rgb */ color: rgb(100, 107, 23);
/* oklch */ color: oklch(50.5% 0.104 114.3);

Tailwind

colors: {
  custom: {
    50: '#93955b',
    500: '#646b17',
    950: '#000000',
  },
}

SCSS

$custom: #646b17;
$custom-light: #93955b;
$custom-dark: #000000;

JSON

{
  "hex": "#646b17",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 23
  },
  "hsl": {
    "h": 65,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.5055,
    "c": 0.10376,
    "h": 114.3
  },
  "luminance": 0.13287
}

Semantic roles & 50–950 ramp

primary

#646B17

secondary

#453DA1

accent

#40E84E

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #646B17

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →